2 Feb
2009
2 Feb
'09
6:11 p.m.
----------------------------------------
From: cclist at sydex.com
To: cctalk at classiccmp.org
Date: Mon, 2 Feb 2009 10:14:57 -0800
Subject: RE: speaking of 3.5" floppies, is 720K R.I.P.?
On 2 Feb 2009 at 7:13, dwight elvey wrote:
Hi
The only timing I had was for powerup reset. Just a cap, resistor
and diode. The rest is digital. I use an edge on diskchange
to clear and the first index to set. It isn't perfect as one
could stick a disk in and turn the motor on and then remove
without stepping. This is not likely on the Cat because
it always uses the disk for a dump ( multiple tracks ).
The Teac holds the index until ready.
Dwight
_________________________________________________________________
Windows Live? Hotmail??more than just e-mail.
http://windowslive.com/howitworks?ocid=TXT_TAGLM_WL_t2_hm_justgotbetter_how…
I'd given up on finding ones with the /READY
signal.
I needed one to add double sided to my Canon Cat. It
had a Canon with a weird 20 pin cable that I just recently
figured out the wiring. I made a circuit with three ttl
chips to recreate the /READY that works well enough.
I had to make a cable translator anyway so I had
a piece of proto board to add the chips on.
I've done the same here with an 8-pin PIC (the advantage is that
there are no discrete timing components). The same could probably be
done with one of the 6-pin PICs. But finding drives with a native
READY signal is better.
Cheers,
Chuck